The first computer-supported test and training device (CTT) that trains the autochthonic back musculature directly through a precisely reproducible application of strain The majority of back problems are the result of functional imbalances and deficits of the torso sensomotor function. CTT CENTAUR identifies and treats these. With this device the global torso musculature can be specifically strengthened and its coordination trained. Furthermore, for the first time it is possible to directly train the local, deeper lying (autochthonic) muscles. CTT CENTAUR works on the basis of the following active principles: